Adiantum glaucoppiyllum, Hook. 
Elatum, frondibus ovatis supradecompositim pinnatis, pinnis 
subchartaceo-membranaceis glabris utrinque glaucis longi- 
uscule petiolulatis oblique cuneatis margine superiore 
rotundato 2-5 lobo, lobis obtusis emarginatis v, bifidis, lobulis 
fructiferis subincurvis, sinubus soriferis, soris mediocribus, 
involucris orbiculari-reniformibus demum subcoriaceis, stipite 
racliique gracili ebeneis nitidis. 
Adiantum glaucophyllum, Hook . Gen. et Sp. Fil. 2. p. 40. 
A. cuneatum, var. angustifolium, Mart . et Galeot. Fil. Mex. 
p. 70. 
Hab. Cordillera of Mexico, inhabiting the cold region, at an 
elevation of 6,000 to 10,500 feet above the level of the sea, 
Galeotti n. 6,266. and 6,359. (the latter with narrower, more 
rigid, and almost coriaceous fronds) and n . 6566 ; Pic 
Orizaba, 9750 feet; Linden s n. 48. Jurgensen , n. 322. Mr. 
Parkinson , •' Teapisca (Chiapas),” Linden, n. 1550. Baqueti, 
Veraguas, Central America, Seemann. 
M.M.Martens and Galeotti referred their Adianta from the 
stations above alluded to, in Mexico, to the S. Brazilian A. 
cuneatum of LangsdorfF and Fischer, as narrow pinnuled 
varieties ; but I have other specimens from Linden and See- 
mann, and all agree in the characters above given. All accord, 
too, in being of a larger size and more compound than that 
species, with usually narrower, more rigid, always more glaucous 
pinnules, together with a less deep and narrow notch for the 
reception of the sori ; and not only do they thus agree in the 
respective characters, but I have not seen anything to corres- 
pond with the present, except from Mexico and the adjacent 
Isthmus ; certainly no such appearances are exhibited by any 
true Brazilian A. cuneatum. It is of the Capillus - Veneris 
group, and is I think more nearly allied to the East Indian 
A. venustum , Don, than to any other. 
Fig . 1. Sterile pinnule, f. 2, fertile pinnule '.—magnified. 
